The First Five Minutes of a Core Collapse Supernova: Multidimensional Hydrodynamic Models

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dc.creatorKifonidis, K.
dc.creatorPlewa, T.
dc.creatorJanka, H. -Th.
dc.creatorMueller, E.
dc.date1999-11-22
dc.date.accessioned2026-07-07T02:34:35Z
dc.date.available2026-07-07T02:34:35Z
dc.descriptionWe present results of high-resolution two-dimensional simulations which follow the first five minutes of a core collapse supernova explosion in a 15 solar mass blue supergiant progenitor. The computations start shortly after core bounce and include neutrino-matter interactions by using a light-bulb approximation for the neutrinos, and a treatment of the nucleosynthesis due to explosive silicon and oxygen burning. We find that newly formed iron-group elements are distributed throughout a significant fraction of the stellar helium core by the concerted action of convective and Rayleigh-Taylor instabilities. Fast moving nickel mushrooms with velocities up to 4000 km/s are observed. A continuation of the calculations to later times, however, indicates, that the iron velocities observed in SN 1987 A cannot be reproduced due to a strong deceleration of the clumps during their interaction with the dense shell left behind by the shock at the He/H interface. Therefore, we cannot confirm the claim that convective "premixing" of the nickel in the early phases of the explosion solves the problem of the high iron velocities.
dc.description8 pages, LaTeX, 4 postscript figures, to appear in R. Diehl, ed., Proceedings of the Workshop on "Astronomy with Radioactivities" held at Ringberg Castle, Tegernsee, Germany, Sep. 29th - Oct. 2nd, 1999
dc.identifierhttps://arxiv.org/abs/astro-ph/9911407
dc.identifierhttp://arxiv.org/abs/astro-ph/9911407
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/15300
dc.subjectAstrophysics
dc.titleThe First Five Minutes of a Core Collapse Supernova: Multidimensional Hydrodynamic Models
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